swipe up to see all the available parameters and specify the border style you wish to apply:

tap the Color option and select the necessary border color from the Theme Colors or Standard Colors palette. Return to the previous screen using the Back arrow on the left.

tap the Size option and select the necessary border width: Thin, Medium or Thick. Return to the previous screen using the Back arrow on the left.

select one of the available border templates:
No Border,
All Borders,
Bottom Border,
Top Border,
Left Border,
Right Border,
Inside Borders,
Inside Vertical Borders,
Inside Horizontal Borders,
Diagonal Up Border,
Diagonal Down Border.

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